Radiator-valve and attachment therefor.



J. A. SERRELL. RADIATOR VALVE AND ATTACHMENT THEREFOR. :1

APPLICATION FILED AUG. 2, 1906.

991,550. Patenfidfiay 9,1911.

$32.2; [g [iii f f iii C d- "1' "i $.71? V d j i M l:

W JTNESSES: v INVENTOR paw/ m n'Nrrn savers JOHN A. SERRELL, OF

JERSEY.

Nr no.

NEW JERSEY, ASSIGNOR T0 WARREN A CORPORATION OF RADIATOR-VALVE AND ATTACHMENT THEREFOR.

To all whom it may concern:

Be it known that I, Jonx A. SERRELL, of North Plainfield, Union county, State of New Jersey, have invented an Improvement in Racliator-Valves and Attachments Therefor, of which the following is a specification.

\Vith the ordinary hand controlled radiator valves, it is very difficult for the average person to make the proper adjustment to admit only the volume of medium required to produce the desired temperature. In a properly operated heating system, only so much steam or heating mediumshould be admitted to the radiator as is necessary to give off the amount of heat required to maintain the desired tempera-. amount of' ture in the apartment. The steam required varies with changes in the weather conditions, and it should be possile not only to provide a very minute opening when desired but also to obtain very small variations in the size of the opening,

and the valve should also have capacity for being tightly closed to completely shut off the supply and to be fully opened when a full supply is required.

With the ordinary handvalves'*having a valve piece which controls the size of the thoroughfare by its movements to and from a seat, it is very difficult to obtain nice adjustments, since the area of the opening is the annular space between the valve-piece and its seat, and ,small movements of the valvestem will produce substantial movements in the valve-piece and corresponding variations in the area of the opening.

It is the object of my invention to enable an ordinary hand controlled stop or seat valve to be regulated with ease by the average person not only to tightly close or fully open the valve, but also to produce the desired small variations in the area of the opening to properly control the volume of steam or heating medium admitted and the resulting temperature.

It is also an object of my invention to enable an ordinary hand valve, such as is now commonly employed, to be transformed into a valvehaving the capacity forproducing this minute adjustment, by the attachment of an auxiliary part or piece, and without steam or heating Specification of Letters Patent. Application filed August 2,1906.

Patented Ma y 9, 1911. Serial No. 328,889.

otherwise altering or changing the structure or parts of the valve.

To apply my improvements to an existing heating system, it is'only necessary to de tach the valve caps with their stems and valve pieces and attach the auxiliary pieces to the existing valve pieces.

In the drawings; Figure 1 is a vertical section of a valve embodying the invention with the cap and stem in elevation; and Fig. 2 is a side elevation of the detached auxiliary valve-piece.

a is the valve-body, which ma be of any convenient form, and has the in et '6, outlet 0 and the thoroughfare or passage (Z.

c is the usual cap or bonnet screwed into the open top of the valve-body and having internal threads engaged by the threaded stem j, which is operated by the handwheel 9.

it is the usual valve-piece carried by the stem f which controls the thoroughfare (Z.

So far usual construction, such as is employed in radiator supply valves, in which the areaof the thorougifare and the supply of steam are controlled by the adjustment of the valve-piece h by the stem f and its wheel-g. In such valves, however, it is difficult to obtain a minute opening of the thoroughfare or to regulate its area with precision, When the valve piece moves from its seat, the opening afforded is the annular space between the seat and-valve-piece, and avery small movement of the stem, particularly with the ordinary stems having threads of :1 coarse pitch, will produce a very substantial variation in the area of the opening;

'lo obviate this and to enable the area of the thoroughfare to be adjusted with great precision, I employ the piece j. As shown this is in the form of a small inverted cup or hollow piston, secured at its bottom to the valve piece, as by the screw 2 and fitting in the opening or thoroughfare (Z. This piece has elongated perforations 70 extending at the top to the level of the contact surface of the main valve-piece 71-. It follows that the instant the main valve-pieoe is raised or cracked to the least extent, the upper ends of the slots or perforations 7c as described the valve is of the i will be exposed, and a small opening will be provided for the passage of steam. By this means a very delicate adjustment is provided, which would not be possible if the main valve must be raised to more or less extent before an opening is afforded. As the main-valve is raised higher more of the length'of the slots k will be opened, and a greater passage will be obtained. The size of the steam passage may thus be regulated by the adjustment of the main valve, while the closing of the valve is effected in the usual manner by the seatingof the main valve-piece on its seat. 'lVhile the valve thus has the advantages of the delicate adjustment afforded by the piece j, it also preserves the functions of the ordinary mainvalve-piece h in fully closin the valve and in opening it to a very smal. extent as soon as it is cracked, this result being due to the extension of the slots lo at the top to the level of the contact face of the main valve-- able, and may be easily applied to any ordi nary hand valve by simply attaching it to theordinary valve-piece; it may however be made integral with the valve-piece,-if desired.

While l have shown and particularly described the invention as applied to a supply valve for controlling the supply of steam or heating medium to the radiator, it may eenoso also be applied to a return valve for control: ling, the discharge of the heating'medium lVhat I claim as new and desire to secure to the bottom of the main valve piece and extending through the thoroughfare and adapted to aiford a small variable passage way between the inlet and outlet when the main valve piece is raised. 4

2. A valve consisting of a body having an inlet and outlet, a thoroughfare and a seat about said thoroughfare, the main Valvepiece adapted to fit upon the seat and close the thoroughfare, the stem for operating said valve piece, the auxiliary valve-piece consisting of ahollow piston having elongated openings in its side walls extending at the top to the contact surface of the main valvepiece, said piston being secured to the bottom of the main. valve-piece and extend ing through the thoroughfare and adapted to aii'ord a small variable passageway between the inlet and outlet when the main valve-piece is raised, and means for detachably securing said auxiliary-valve-piece to the main valve-piece;

In testimony of which invention, 1 have hereunto set my hand.

' JOHN A, snnnniin Witnesses:

ERNEST HOWARD HUNTER, R. M. KELLY. 

